1. Department of Applied Microbiology, Faculty of Applied Sciences, Taiz University, Taiz, Yemen
2. Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia (UTHM), Batu Pahat, Johor, Malaysia
3. Micro-Pollutant Research Centre (MPRC), Department of Water and Environmental Engineering, Faculty of Civil & Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor, Malaysia